When both subterranean and drywood termites are present after construction, you must combine tactics so you do not leave a gap in protection.

Start with a thorough inspection to map galleries and moisture sources because knowing where each species nests drives the approach. For subterranean termites apply a continuous soil treatment barrier or install baiting stations along the perimeter following label directions and local regulations; maintain moisture control by repairing leaks and improving drainage to reduce soil contact with wood. For drywood termites address isolated galleries directly with localized heat treatment using calibrated probes to reach lethal temperatures or use whole structure fumigation when infestation is extensive; ensure occupants and pets are relocated and all regulatory steps are followed for fumigants. Treat infested furniture and attic framing separately using spot injections of approved insecticidal formulations or heat treatments for smaller items, and consider tent fumigation for widespread drywood activity. Increase monitoring by installing inspection panels in attics and placing additional bait stations and sticky monitors in high risk areas, and schedule follow up inspections at regular intervals until no activity is detected. Keep clear, dated records of treatments, materials used, and inspection findings so future technicians understand what was done and where to focus repeat treatments.

A common mistake is treating only the soil and ignoring drywood galleries, which leaves active colonies in the structure; fix this by combining soil barriers with targeted drywood treatments based on inspection findings. Another issue is treating furniture the same way as structural framing, which can damage contents or fail to reach hidden galleries; use separate treatment methods like heat for furniture or remove and treat items off site. A third concern is relying solely on one monitoring method which can miss residual populations; improve detection by using multiple monitoring tools and increasing inspection frequency until clear.

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